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Try to fix BSD breakage by 806b60248218bd5f74a8b070f5a99a864e8e51c6
[qemu.git] / net.c
CommitLineData
63a01ef8
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
63a01ef8
AL		 24#include <unistd.h>
25#include <fcntl.h>
26#include <signal.h>
27#include <time.h>
28#include <errno.h>
29#include <sys/time.h>
30#include <zlib.h>
31
71e72a19 32/* Needed early for CONFIG_BSD etc. */
d40cdb10 33#include "config-host.h"
f40d7537
BS		 34/* Needed early to override system queue definitions on BSD */
35#include "sys-queue.h"
d40cdb10 36
63a01ef8
AL		 37#ifndef _WIN32
38#include <sys/times.h>
39#include <sys/wait.h>
40#include <termios.h>
41#include <sys/mman.h>
42#include <sys/ioctl.h>
24646c7e 43#include <sys/resource.h>
63a01ef8
AL		 44#include <sys/socket.h>
45#include <netinet/in.h>
24646c7e
BS		 46#include <net/if.h>
47#ifdef __NetBSD__
48#include <net/if_tap.h>
49#endif
50#ifdef __linux__
51#include <linux/if_tun.h>
52#endif
53#include <arpa/inet.h>
63a01ef8
AL		 54#include <dirent.h>
55#include <netdb.h>
56#include <sys/select.h>
71e72a19 57#ifdef CONFIG_BSD
63a01ef8 58#include <sys/stat.h>
c5e97233 59#if defined(__FreeBSD__) || defined(__DragonFly__)
63a01ef8 60#include <libutil.h>
24646c7e
BS		 61#else
62#include <util.h>
63a01ef8
AL		 63#endif
64#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
65#include <freebsd/stdlib.h>
66#else
67#ifdef __linux__
63a01ef8
AL		 68#include <pty.h>
69#include <malloc.h>
70#include <linux/rtc.h>
71
72/* For the benefit of older linux systems which don't supply it,
73 we use a local copy of hpet.h. */
74/* #include <linux/hpet.h> */
75#include "hpet.h"
76
77#include <linux/ppdev.h>
78#include <linux/parport.h>
79#endif
80#ifdef __sun__
81#include <sys/stat.h>
82#include <sys/ethernet.h>
83#include <sys/sockio.h>
84#include <netinet/arp.h>
85#include <netinet/in.h>
86#include <netinet/in_systm.h>
87#include <netinet/ip.h>
88#include <netinet/ip_icmp.h> // must come after ip.h
89#include <netinet/udp.h>
90#include <netinet/tcp.h>
91#include <net/if.h>
92#include <syslog.h>
93#include <stropts.h>
94#endif
95#endif
96#endif
97
63a01ef8
AL		 98#if defined(__OpenBSD__)
99#include <util.h>
100#endif
101
102#if defined(CONFIG_VDE)
103#include <libvdeplug.h>
104#endif
105
511d2b14
BS		 106#include "qemu-common.h"
107#include "net.h"
108#include "monitor.h"
109#include "sysemu.h"
110#include "qemu-timer.h"
111#include "qemu-char.h"
112#include "audio/audio.h"
113#include "qemu_socket.h"
bb9ea79e 114#include "qemu-log.h"
511d2b14 115
d918f23e 116#include "slirp/libslirp.h"
511d2b14
BS		 117
118
63a01ef8
AL		 119static VLANState *first_vlan;
120
121/***********************************************************/
122/* network device redirectors */
123
124#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
125static void hex_dump(FILE *f, const uint8_t *buf, int size)
126{
127 int len, i, j, c;
128
129 for(i=0;i<size;i+=16) {
130 len = size - i;
131 if (len > 16)
132 len = 16;
133 fprintf(f, "%08x ", i);
134 for(j=0;j<16;j++) {
135 if (j < len)
136 fprintf(f, " %02x", buf[i+j]);
137 else
138 fprintf(f, " ");
139 }
140 fprintf(f, " ");
141 for(j=0;j<len;j++) {
142 c = buf[i+j];
143 if (c < ' ' || c > '~')
144 c = '.';
145 fprintf(f, "%c", c);
146 }
147 fprintf(f, "\n");
148 }
149}
150#endif
151
152static int parse_macaddr(uint8_t *macaddr, const char *p)
153{
154 int i;
155 char *last_char;
156 long int offset;
157
158 errno = 0;
159 offset = strtol(p, &last_char, 0);
160 if (0 == errno && '\0' == *last_char &&
161 offset >= 0 && offset <= 0xFFFFFF) {
162 macaddr[3] = (offset & 0xFF0000) >> 16;
163 macaddr[4] = (offset & 0xFF00) >> 8;
164 macaddr[5] = offset & 0xFF;
165 return 0;
166 } else {
167 for(i = 0; i < 6; i++) {
168 macaddr[i] = strtol(p, (char **)&p, 16);
169 if (i == 5) {
170 if (*p != '\0')
171 return -1;
172 } else {
173 if (*p != ':' && *p != '-')
174 return -1;
175 p++;
176 }
177 }
178 return 0;
179 }
180
181 return -1;
182}
183
184static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
185{
186 const char *p, *p1;
187 int len;
188 p = *pp;
189 p1 = strchr(p, sep);
190 if (!p1)
191 return -1;
192 len = p1 - p;
193 p1++;
194 if (buf_size > 0) {
195 if (len > buf_size - 1)
196 len = buf_size - 1;
197 memcpy(buf, p, len);
198 buf[len] = '\0';
199 }
200 *pp = p1;
201 return 0;
202}
203
204int parse_host_src_port(struct sockaddr_in *haddr,
205 struct sockaddr_in *saddr,
206 const char *input_str)
207{
208 char *str = strdup(input_str);
209 char *host_str = str;
210 char *src_str;
211 const char *src_str2;
212 char *ptr;
213
214 /*
215 * Chop off any extra arguments at the end of the string which
216 * would start with a comma, then fill in the src port information
217 * if it was provided else use the "any address" and "any port".
218 */
219 if ((ptr = strchr(str,',')))
220 *ptr = '\0';
221
222 if ((src_str = strchr(input_str,'@'))) {
223 *src_str = '\0';
224 src_str++;
225 }
226
227 if (parse_host_port(haddr, host_str) < 0)
228 goto fail;
229
230 src_str2 = src_str;
231 if (!src_str || *src_str == '\0')
232 src_str2 = ":0";
233
234 if (parse_host_port(saddr, src_str2) < 0)
235 goto fail;
236
237 free(str);
238 return(0);
239
240fail:
241 free(str);
242 return -1;
243}
244
245int parse_host_port(struct sockaddr_in *saddr, const char *str)
246{
247 char buf[512];
248 struct hostent *he;
249 const char *p, *r;
250 int port;
251
252 p = str;
253 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
254 return -1;
255 saddr->sin_family = AF_INET;
256 if (buf[0] == '\0') {
257 saddr->sin_addr.s_addr = 0;
258 } else {
cd390083 259 if (qemu_isdigit(buf[0])) {
63a01ef8
AL		 260 if (!inet_aton(buf, &saddr->sin_addr))
261 return -1;
262 } else {
263 if ((he = gethostbyname(buf)) == NULL)
264 return - 1;
265 saddr->sin_addr = *(struct in_addr *)he->h_addr;
266 }
267 }
268 port = strtol(p, (char **)&r, 0);
269 if (r == p)
270 return -1;
271 saddr->sin_port = htons(port);
272 return 0;
273}
274
7cb7434b
AL		 275void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
276{
277 snprintf(vc->info_str, sizeof(vc->info_str),
4dda4063
AL		 278 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
279 vc->model,
7cb7434b
AL		 280 macaddr[0], macaddr[1], macaddr[2],
281 macaddr[3], macaddr[4], macaddr[5]);
282}
283
676cff29
AL		 284static char *assign_name(VLANClientState *vc1, const char *model)
285{
286 VLANState *vlan;
287 char buf[256];
288 int id = 0;
289
290 for (vlan = first_vlan; vlan; vlan = vlan->next) {
291 VLANClientState *vc;
292
293 for (vc = vlan->first_client; vc; vc = vc->next)
294 if (vc != vc1 && strcmp(vc->model, model) == 0)
295 id++;
296 }
297
298 snprintf(buf, sizeof(buf), "%s.%d", model, id);
299
300 return strdup(buf);
301}
302
63a01ef8 303VLANClientState *qemu_new_vlan_client(VLANState *vlan,
bf38c1a0 304 const char *model,
7a9f6e4a 305 const char *name,
cda9046b
MM		 306 NetCanReceive *can_receive,
307 NetReceive *receive,
308 NetReceiveIOV *receive_iov,
b946a153 309 NetCleanup *cleanup,
63a01ef8
AL		 310 void *opaque)
311{
312 VLANClientState *vc, **pvc;
313 vc = qemu_mallocz(sizeof(VLANClientState));
bf38c1a0 314 vc->model = strdup(model);
7a9f6e4a
AL		 315 if (name)
316 vc->name = strdup(name);
317 else
318 vc->name = assign_name(vc, model);
cda9046b
MM		 319 vc->can_receive = can_receive;
320 vc->receive = receive;
321 vc->receive_iov = receive_iov;
b946a153 322 vc->cleanup = cleanup;
63a01ef8
AL		 323 vc->opaque = opaque;
324 vc->vlan = vlan;
325
326 vc->next = NULL;
327 pvc = &vlan->first_client;
328 while (*pvc != NULL)
329 pvc = &(*pvc)->next;
330 *pvc = vc;
331 return vc;
332}
333
334void qemu_del_vlan_client(VLANClientState *vc)
335{
336 VLANClientState **pvc = &vc->vlan->first_client;
337
338 while (*pvc != NULL)
339 if (*pvc == vc) {
340 *pvc = vc->next;
b946a153
AL		 341 if (vc->cleanup) {
342 vc->cleanup(vc);
343 }
676cff29 344 free(vc->name);
bf38c1a0 345 free(vc->model);
dad35419 346 qemu_free(vc);
63a01ef8
AL		 347 break;
348 } else
349 pvc = &(*pvc)->next;
350}
351
8b13c4a7
AL		 352VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
353{
354 VLANClientState **pvc = &vlan->first_client;
355
356 while (*pvc != NULL)
357 if ((*pvc)->opaque == opaque)
358 return *pvc;
359 else
360 pvc = &(*pvc)->next;
361
362 return NULL;
363}
364
1a609520
JK		 365static VLANClientState *
366qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
367 const char *client_str)
368{
369 VLANState *vlan;
370 VLANClientState *vc;
371
372 vlan = qemu_find_vlan(vlan_id, 0);
373 if (!vlan) {
374 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
375 return NULL;
376 }
377
378 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
379 if (!strcmp(vc->name, client_str)) {
380 break;
381 }
382 }
383 if (!vc) {
384 monitor_printf(mon, "can't find device %s on VLAN %d\n",
385 client_str, vlan_id);
386 }
387
388 return vc;
389}
390
2e1e0641 391int qemu_can_send_packet(VLANClientState *sender)
63a01ef8 392{
2e1e0641 393 VLANState *vlan = sender->vlan;
63a01ef8
AL		 394 VLANClientState *vc;
395
2e1e0641
MM		 396 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
397 if (vc == sender) {
398 continue;
399 }
400
cda9046b 401 /* no can_receive() handler, they can always receive */
e3f5ec2b 402 if (!vc->can_receive || vc->can_receive(vc)) {
2e1e0641 403 return 1;
63a01ef8
AL		 404 }
405 }
406 return 0;
407}
408
3e021d40 409static int
764a4d1d 410qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
63a01ef8 411{
63a01ef8 412 VLANClientState *vc;
3e021d40 413 int ret = -1;
63a01ef8 414
e94667b9
MM		 415 sender->vlan->delivering = 1;
416
764a4d1d 417 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
3e021d40
MM		 418 ssize_t len;
419
420 if (vc == sender) {
421 continue;
764a4d1d 422 }
3e021d40
MM		 423
424 if (vc->link_down) {
425 ret = size;
426 continue;
427 }
428
429 len = vc->receive(vc, buf, size);
430
431 ret = (ret >= 0) ? ret : len;
764a4d1d 432 }
3e021d40 433
e94667b9
MM		 434 sender->vlan->delivering = 0;
435
3e021d40 436 return ret;
764a4d1d
AL		 437}
438
8cad5516
MM		 439void qemu_purge_queued_packets(VLANClientState *vc)
440{
9da43187 441 VLANPacket *packet, *next;
8cad5516 442
9da43187 443 TAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
8cad5516 444 if (packet->sender == vc) {
9da43187 445 TAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
8cad5516 446 qemu_free(packet);
8cad5516
MM		 447 }
448 }
449}
450
f3b6c7fc 451void qemu_flush_queued_packets(VLANClientState *vc)
e94667b9 452{
9da43187
JK		 453 while (!TAILQ_EMPTY(&vc->vlan->send_queue)) {
454 VLANPacket *packet;
f3b6c7fc
MM		 455 int ret;
456
9da43187
JK		 457 packet = TAILQ_FIRST(&vc->vlan->send_queue);
458 TAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
f3b6c7fc
MM		 459
460 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
461 if (ret == 0 && packet->sent_cb != NULL) {
9da43187 462 TAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
f3b6c7fc
MM		 463 break;
464 }
465
466 if (packet->sent_cb)
783527a9 467 packet->sent_cb(packet->sender, ret);
f3b6c7fc 468
e94667b9
MM		 469 qemu_free(packet);
470 }
471}
472
f3b6c7fc
MM		 473static void qemu_enqueue_packet(VLANClientState *sender,
474 const uint8_t *buf, int size,
475 NetPacketSent *sent_cb)
e94667b9
MM		 476{
477 VLANPacket *packet;
478
479 packet = qemu_malloc(sizeof(VLANPacket) + size);
e94667b9
MM		 480 packet->sender = sender;
481 packet->size = size;
f3b6c7fc 482 packet->sent_cb = sent_cb;
e94667b9 483 memcpy(packet->data, buf, size);
9da43187
JK		 484
485 TAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
e94667b9
MM		 486}
487
f3b6c7fc
MM		 488ssize_t qemu_send_packet_async(VLANClientState *sender,
489 const uint8_t *buf, int size,
490 NetPacketSent *sent_cb)
764a4d1d 491{
f3b6c7fc 492 int ret;
764a4d1d 493
f3b6c7fc
MM		 494 if (sender->link_down) {
495 return size;
496 }
436e5e53 497
63a01ef8 498#ifdef DEBUG_NET
f3b6c7fc 499 printf("vlan %d send:\n", sender->vlan->id);
63a01ef8
AL		 500 hex_dump(stdout, buf, size);
501#endif
f3b6c7fc
MM		 502
503 if (sender->vlan->delivering) {
504 qemu_enqueue_packet(sender, buf, size, NULL);
505 return size;
506 }
507
508 ret = qemu_deliver_packet(sender, buf, size);
509 if (ret == 0 && sent_cb != NULL) {
510 qemu_enqueue_packet(sender, buf, size, sent_cb);
511 return 0;
63a01ef8 512 }
e94667b9 513
f3b6c7fc
MM		 514 qemu_flush_queued_packets(sender);
515
516 return ret;
517}
518
519void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
520{
521 qemu_send_packet_async(vc, buf, size, NULL);
63a01ef8
AL		 522}
523
fbe78f4f
AL		 524static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
525 int iovcnt)
526{
527 uint8_t buffer[4096];
528 size_t offset = 0;
529 int i;
530
531 for (i = 0; i < iovcnt; i++) {
532 size_t len;
533
534 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
535 memcpy(buffer + offset, iov[i].iov_base, len);
536 offset += len;
537 }
538
f3b6c7fc 539 return vc->receive(vc, buffer, offset);
fbe78f4f
AL		 540}
541
e0e7877a
AL		 542static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
543{
544 size_t offset = 0;
545 int i;
546
547 for (i = 0; i < iovcnt; i++)
548 offset += iov[i].iov_len;
549 return offset;
550}
551
e94667b9
MM		 552static int qemu_deliver_packet_iov(VLANClientState *sender,
553 const struct iovec *iov, int iovcnt)
fbe78f4f 554{
fbe78f4f 555 VLANClientState *vc;
e94667b9
MM		 556 int ret = -1;
557
558 sender->vlan->delivering = 1;
559
560 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
561 ssize_t len;
562
563 if (vc == sender) {
564 continue;
565 }
566
567 if (vc->link_down) {
568 ret = calc_iov_length(iov, iovcnt);
569 continue;
570 }
571
572 if (vc->receive_iov) {
573 len = vc->receive_iov(vc, iov, iovcnt);
574 } else {
575 len = vc_sendv_compat(vc, iov, iovcnt);
576 }
577
578 ret = (ret >= 0) ? ret : len;
579 }
580
581 sender->vlan->delivering = 0;
582
583 return ret;
584}
585
586static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
f3b6c7fc
MM		 587 const struct iovec *iov, int iovcnt,
588 NetPacketSent *sent_cb)
e94667b9 589{
c27ff608 590 VLANPacket *packet;
e94667b9 591 size_t max_len = 0;
c27ff608 592 int i;
fbe78f4f 593
e94667b9 594 max_len = calc_iov_length(iov, iovcnt);
e0e7877a 595
e94667b9 596 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
e94667b9 597 packet->sender = sender;
f3b6c7fc 598 packet->sent_cb = sent_cb;
e94667b9 599 packet->size = 0;
c27ff608 600
e94667b9
MM		 601 for (i = 0; i < iovcnt; i++) {
602 size_t len = iov[i].iov_len;
c27ff608 603
e94667b9
MM		 604 memcpy(packet->data + packet->size, iov[i].iov_base, len);
605 packet->size += len;
606 }
fbe78f4f 607
9da43187 608 TAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
fbe78f4f 609
e94667b9
MM		 610 return packet->size;
611}
fbe78f4f 612
f3b6c7fc
MM		 613ssize_t qemu_sendv_packet_async(VLANClientState *sender,
614 const struct iovec *iov, int iovcnt,
615 NetPacketSent *sent_cb)
e94667b9
MM		 616{
617 int ret;
618
619 if (sender->link_down) {
620 return calc_iov_length(iov, iovcnt);
621 }
622
623 if (sender->vlan->delivering) {
f3b6c7fc 624 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
fbe78f4f
AL		 625 }
626
e94667b9 627 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
f3b6c7fc
MM		 628 if (ret == 0 && sent_cb != NULL) {
629 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
630 return 0;
631 }
e94667b9
MM		 632
633 qemu_flush_queued_packets(sender);
634
635 return ret;
fbe78f4f
AL		 636}
637
f3b6c7fc
MM		 638ssize_t
639qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
640{
641 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
642}
643
10ae5a7a
JK		 644static void config_error(Monitor *mon, const char *fmt, ...)
645{
646 va_list ap;
647
648 va_start(ap, fmt);
649 if (mon) {
650 monitor_vprintf(mon, fmt, ap);
651 } else {
652 fprintf(stderr, "qemu: ");
653 vfprintf(stderr, fmt, ap);
654 exit(1);
655 }
656 va_end(ap);
657}
658
63a01ef8
AL		 659#if defined(CONFIG_SLIRP)
660
661/* slirp network adapter */
662
c92ef6a2
JK		 663#define SLIRP_CFG_HOSTFWD 1
664#define SLIRP_CFG_LEGACY 2
ad196a9d 665
b8e8af38
JK		 666struct slirp_config_str {
667 struct slirp_config_str *next;
ad196a9d
JK		 668 int flags;
669 char str[1024];
c92ef6a2 670 int legacy_format;
b8e8af38
JK		 671};
672
9f8bd042 673typedef struct SlirpState {
b1c99fcd 674 TAILQ_ENTRY(SlirpState) entry;
9f8bd042
JK		 675 VLANClientState *vc;
676 Slirp *slirp;
28432466
JK		 677#ifndef _WIN32
678 char smb_dir[128];
679#endif
9f8bd042
JK		 680} SlirpState;
681
ad196a9d
JK		 682static struct slirp_config_str *slirp_configs;
683const char *legacy_tftp_prefix;
684const char *legacy_bootp_filename;
b1c99fcd
JK		 685static TAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
686 TAILQ_HEAD_INITIALIZER(slirp_stacks);
63a01ef8 687
9f8bd042 688static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 689 int legacy_format);
9f8bd042 690static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 691 int legacy_format);
ad196a9d 692
c5b76b38 693#ifndef _WIN32
ad196a9d
JK		 694static const char *legacy_smb_export;
695
492efabd 696static void slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
9f8bd042 697 struct in_addr vserver_addr);
28432466
JK		 698static void slirp_smb_cleanup(SlirpState *s);
699#else
700static inline void slirp_smb_cleanup(SlirpState *s) { }
c5b76b38 701#endif
b8e8af38 702
9f8bd042 703int slirp_can_output(void *opaque)
63a01ef8 704{
9f8bd042
JK		 705 SlirpState *s = opaque;
706
707 return qemu_can_send_packet(s->vc);
63a01ef8
AL		 708}
709
9f8bd042 710void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
63a01ef8 711{
9f8bd042
JK		 712 SlirpState *s = opaque;
713
63a01ef8
AL		 714#ifdef DEBUG_SLIRP
715 printf("slirp output:\n");
716 hex_dump(stdout, pkt, pkt_len);
717#endif
9f8bd042 718 qemu_send_packet(s->vc, pkt, pkt_len);
63a01ef8
AL		 719}
720
4f1c942b 721static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 722{
9f8bd042
JK		 723 SlirpState *s = vc->opaque;
724
63a01ef8
AL		 725#ifdef DEBUG_SLIRP
726 printf("slirp input:\n");
727 hex_dump(stdout, buf, size);
728#endif
9f8bd042 729 slirp_input(s->slirp, buf, size);
4f1c942b 730 return size;
63a01ef8
AL		 731}
732
8d6249a7
AL		 733static void net_slirp_cleanup(VLANClientState *vc)
734{
ad0d8c4c
JK		 735 SlirpState *s = vc->opaque;
736
737 slirp_cleanup(s->slirp);
28432466 738 slirp_smb_cleanup(s);
b1c99fcd 739 TAILQ_REMOVE(&slirp_stacks, s, entry);
ad0d8c4c 740 qemu_free(s);
8d6249a7
AL		 741}
742
ad196a9d 743static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
c92ef6a2
JK		 744 const char *name, int restricted,
745 const char *vnetwork, const char *vhost,
746 const char *vhostname, const char *tftp_export,
747 const char *bootfile, const char *vdhcp_start,
748 const char *vnameserver, const char *smb_export,
749 const char *vsmbserver)
63a01ef8 750{
ad0d8c4c 751 /* default settings according to historic slirp */
8389e7f4
AL		 752 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
753 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
ad0d8c4c
JK		 754 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
755 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
756 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
c92ef6a2 757#ifndef _WIN32
ad0d8c4c 758 struct in_addr smbsrv = { .s_addr = 0 };
c92ef6a2 759#endif
ad0d8c4c
JK		 760 SlirpState *s;
761 char buf[20];
762 uint32_t addr;
763 int shift;
764 char *end;
765
766 if (!tftp_export) {
767 tftp_export = legacy_tftp_prefix;
768 }
769 if (!bootfile) {
770 bootfile = legacy_bootp_filename;
771 }
c92ef6a2 772
ad0d8c4c
JK		 773 if (vnetwork) {
774 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
775 if (!inet_aton(vnetwork, &net)) {
776 return -1;
777 }
778 addr = ntohl(net.s_addr);
779 if (!(addr & 0x80000000)) {
780 mask.s_addr = htonl(0xff000000); /* class A */
781 } else if ((addr & 0xfff00000) == 0xac100000) {
782 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
783 } else if ((addr & 0xc0000000) == 0x80000000) {
784 mask.s_addr = htonl(0xffff0000); /* class B */
785 } else if ((addr & 0xffff0000) == 0xc0a80000) {
786 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
787 } else if ((addr & 0xffff0000) == 0xc6120000) {
788 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
789 } else if ((addr & 0xe0000000) == 0xe0000000) {
790 mask.s_addr = htonl(0xffffff00); /* class C */
c92ef6a2 791 } else {
ad0d8c4c
JK		 792 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
793 }
794 } else {
795 if (!inet_aton(buf, &net)) {
796 return -1;
797 }
798 shift = strtol(vnetwork, &end, 10);
799 if (*end != '\0') {
800 if (!inet_aton(vnetwork, &mask)) {
c92ef6a2 801 return -1;
c92ef6a2 802 }
ad0d8c4c
JK		 803 } else if (shift < 4 || shift > 32) {
804 return -1;
805 } else {
806 mask.s_addr = htonl(0xffffffff << (32 - shift));
c92ef6a2 807 }
c92ef6a2 808 }
ad0d8c4c
JK		 809 net.s_addr &= mask.s_addr;
810 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
811 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
812 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
813 }
c92ef6a2 814
ad0d8c4c
JK		 815 if (vhost && !inet_aton(vhost, &host)) {
816 return -1;
817 }
818 if ((host.s_addr & mask.s_addr) != net.s_addr) {
819 return -1;
820 }
c92ef6a2 821
ad0d8c4c
JK		 822 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
823 return -1;
824 }
825 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
826 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
827 return -1;
828 }
c92ef6a2 829
ad0d8c4c
JK		 830 if (vnameserver && !inet_aton(vnameserver, &dns)) {
831 return -1;
832 }
833 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
834 dns.s_addr == host.s_addr) {
835 return -1;
836 }
c92ef6a2
JK		 837
838#ifndef _WIN32
ad0d8c4c
JK		 839 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
840 return -1;
841 }
c92ef6a2
JK		 842#endif
843
ad0d8c4c
JK		 844 s = qemu_mallocz(sizeof(SlirpState));
845 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
846 tftp_export, bootfile, dhcp, dns, s);
b1c99fcd 847 TAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
b8e8af38 848
ad0d8c4c
JK		 849 while (slirp_configs) {
850 struct slirp_config_str *config = slirp_configs;
b8e8af38 851
ad0d8c4c
JK		 852 if (config->flags & SLIRP_CFG_HOSTFWD) {
853 slirp_hostfwd(s, mon, config->str,
854 config->flags & SLIRP_CFG_LEGACY);
855 } else {
856 slirp_guestfwd(s, mon, config->str,
857 config->flags & SLIRP_CFG_LEGACY);
b8e8af38 858 }
ad0d8c4c
JK		 859 slirp_configs = config->next;
860 qemu_free(config);
861 }
b8e8af38 862#ifndef _WIN32
ad0d8c4c
JK		 863 if (!smb_export) {
864 smb_export = legacy_smb_export;
865 }
866 if (smb_export) {
492efabd 867 slirp_smb(s, mon, smb_export, smbsrv);
63a01ef8 868 }
ad0d8c4c 869#endif
b8e8af38 870
9f8bd042
JK		 871 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
872 net_slirp_cleanup, s);
fc57bc57
JK		 873 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
874 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
63a01ef8
AL		 875 return 0;
876}
877
f13b572c
JK		 878static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
879 const char *stack)
880{
881 VLANClientState *vc;
882
883 if (vlan) {
884 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
885 if (!vc) {
886 return NULL;
887 }
888 if (strcmp(vc->model, "user")) {
889 monitor_printf(mon, "invalid device specified\n");
890 return NULL;
891 }
892 return vc->opaque;
893 } else {
894 if (TAILQ_EMPTY(&slirp_stacks)) {
895 monitor_printf(mon, "user mode network stack not in use\n");
896 return NULL;
897 }
898 return TAILQ_FIRST(&slirp_stacks);
899 }
900}
901
1d4daa91 902void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
c1261d8d 903{
3c6a0580 904 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c1261d8d
AG		 905 int host_port;
906 char buf[256] = "";
f13b572c
JK		 907 const char *src_str, *p;
908 SlirpState *s;
c1261d8d 909 int is_udp = 0;
9c12a6f2 910 int err;
1d4daa91
LC		 911 const char *arg1 = qdict_get_str(qdict, "arg1");
912 const char *arg2 = qdict_get_try_str(qdict, "arg2");
913 const char *arg3 = qdict_get_try_str(qdict, "arg3");
c1261d8d 914
f13b572c
JK		 915 if (arg2) {
916 s = slirp_lookup(mon, arg1, arg2);
917 src_str = arg3;
918 } else {
919 s = slirp_lookup(mon, NULL, NULL);
920 src_str = arg1;
921 }
922 if (!s) {
c1261d8d 923 return;
f3546deb 924 }
c1261d8d 925
3c6a0580 926 if (!src_str || !src_str[0])
c1261d8d
AG		 927 goto fail_syntax;
928
f13b572c 929 p = src_str;
c1261d8d
AG		 930 get_str_sep(buf, sizeof(buf), &p, ':');
931
932 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
933 is_udp = 0;
934 } else if (!strcmp(buf, "udp")) {
935 is_udp = 1;
936 } else {
937 goto fail_syntax;
938 }
939
3c6a0580
JK		 940 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
941 goto fail_syntax;
942 }
943 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
944 goto fail_syntax;
945 }
946
c1261d8d
AG		 947 host_port = atoi(p);
948
b1c99fcd 949 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
9f8bd042 950 host_addr, host_port);
c1261d8d 951
9c12a6f2
JK		 952 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
953 err ? "removed" : "not found");
c1261d8d
AG		 954 return;
955
956 fail_syntax:
957 monitor_printf(mon, "invalid format\n");
958}
959
9f8bd042 960static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
3c6a0580 961 int legacy_format)
63a01ef8 962{
3c6a0580 963 struct in_addr host_addr = { .s_addr = INADDR_ANY };
c92ef6a2 964 struct in_addr guest_addr = { .s_addr = 0 };
63a01ef8 965 int host_port, guest_port;
b8e8af38 966 const char *p;
c92ef6a2 967 char buf[256];
b8e8af38 968 int is_udp;
c92ef6a2 969 char *end;
1c6ed9f3 970
63a01ef8 971 p = redir_str;
f13b572c 972 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 973 goto fail_syntax;
b8e8af38 974 }
d4ebe193 975 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
63a01ef8
AL		 976 is_udp = 0;
977 } else if (!strcmp(buf, "udp")) {
978 is_udp = 1;
979 } else {
d4ebe193 980 goto fail_syntax;
63a01ef8
AL		 981 }
982
3c6a0580
JK		 983 if (!legacy_format) {
984 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
985 goto fail_syntax;
986 }
987 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
988 goto fail_syntax;
989 }
990 }
991
992 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
d4ebe193 993 goto fail_syntax;
b8e8af38 994 }
c92ef6a2
JK		 995 host_port = strtol(buf, &end, 0);
996 if (*end != '\0' || host_port < 1 || host_port > 65535) {
d4ebe193 997 goto fail_syntax;
b8e8af38 998 }
63a01ef8 999
b8e8af38 1000 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
d4ebe193 1001 goto fail_syntax;
b8e8af38 1002 }
c92ef6a2 1003 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
d4ebe193 1004 goto fail_syntax;
b8e8af38 1005 }
63a01ef8 1006
c92ef6a2
JK		 1007 guest_port = strtol(p, &end, 0);
1008 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
d4ebe193 1009 goto fail_syntax;
b8e8af38 1010 }
63a01ef8 1011
9f8bd042
JK		 1012 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1013 guest_port) < 0) {
c92ef6a2
JK		 1014 config_error(mon, "could not set up host forwarding rule '%s'\n",
1015 redir_str);
63a01ef8
AL		 1016 }
1017 return;
d4ebe193
AL		 1018
1019 fail_syntax:
c92ef6a2 1020 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
63a01ef8
AL		 1021}
1022
1d4daa91 1023void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
b8e8af38 1024{
f13b572c
JK		 1025 const char *redir_str;
1026 SlirpState *s;
1d4daa91
LC		 1027 const char *arg1 = qdict_get_str(qdict, "arg1");
1028 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1029 const char *arg3 = qdict_get_try_str(qdict, "arg3");
f13b572c
JK		 1030
1031 if (arg2) {
1032 s = slirp_lookup(mon, arg1, arg2);
1033 redir_str = arg3;
1034 } else {
1035 s = slirp_lookup(mon, NULL, NULL);
1036 redir_str = arg1;
1037 }
1038 if (s) {
1039 slirp_hostfwd(s, mon, redir_str, 0);
b8e8af38
JK		 1040 }
1041
f3546deb
JK		 1042}
1043
1044void net_slirp_redir(const char *redir_str)
1045{
1046 struct slirp_config_str *config;
1047
b1c99fcd 1048 if (TAILQ_EMPTY(&slirp_stacks)) {
f3546deb
JK		 1049 config = qemu_malloc(sizeof(*config));
1050 pstrcpy(config->str, sizeof(config->str), redir_str);
3c6a0580 1051 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
f3546deb
JK		 1052 config->next = slirp_configs;
1053 slirp_configs = config;
b8e8af38
JK		 1054 return;
1055 }
1056
b1c99fcd 1057 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
b8e8af38
JK		 1058}
1059
63a01ef8
AL		 1060#ifndef _WIN32
1061
63a01ef8 1062/* automatic user mode samba server configuration */
28432466 1063static void slirp_smb_cleanup(SlirpState *s)
63a01ef8 1064{
28432466 1065 char cmd[128];
09c18925 1066
28432466
JK		 1067 if (s->smb_dir[0] != '\0') {
1068 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1069 system(cmd);
1070 s->smb_dir[0] = '\0';
1071 }
63a01ef8
AL		 1072}
1073
492efabd 1074static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
9f8bd042 1075 struct in_addr vserver_addr)
63a01ef8 1076{
28432466
JK		 1077 static int instance;
1078 char smb_conf[128];
1079 char smb_cmdline[128];
63a01ef8
AL		 1080 FILE *f;
1081
28432466
JK		 1082 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1083 (long)getpid(), instance++);
1084 if (mkdir(s->smb_dir, 0700) < 0) {
1085 config_error(mon, "could not create samba server dir '%s'\n",
1086 s->smb_dir);
492efabd 1087 return;
63a01ef8 1088 }
28432466 1089 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
63a01ef8
AL		 1090
1091 f = fopen(smb_conf, "w");
1092 if (!f) {
28432466 1093 slirp_smb_cleanup(s);
492efabd
JK		 1094 config_error(mon, "could not create samba server "
1095 "configuration file '%s'\n", smb_conf);
1096 return;
63a01ef8
AL		 1097 }
1098 fprintf(f,
1099 "[global]\n"
1100 "private dir=%s\n"
1101 "smb ports=0\n"
1102 "socket address=127.0.0.1\n"
1103 "pid directory=%s\n"
1104 "lock directory=%s\n"
1105 "log file=%s/log.smbd\n"
1106 "smb passwd file=%s/smbpasswd\n"
1107 "security = share\n"
1108 "[qemu]\n"
1109 "path=%s\n"
1110 "read only=no\n"
1111 "guest ok=yes\n",
28432466
JK		 1112 s->smb_dir,
1113 s->smb_dir,
1114 s->smb_dir,
1115 s->smb_dir,
1116 s->smb_dir,
63a01ef8
AL		 1117 exported_dir
1118 );
1119 fclose(f);
63a01ef8
AL		 1120
1121 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1122 SMBD_COMMAND, smb_conf);
1123
bb53fc53 1124 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
28432466 1125 slirp_smb_cleanup(s);
492efabd 1126 config_error(mon, "conflicting/invalid smbserver address\n");
c92ef6a2 1127 }
63a01ef8
AL		 1128}
1129
ad196a9d 1130/* automatic user mode samba server configuration (legacy interface) */
b8e8af38
JK		 1131void net_slirp_smb(const char *exported_dir)
1132{
c92ef6a2
JK		 1133 struct in_addr vserver_addr = { .s_addr = 0 };
1134
ad196a9d 1135 if (legacy_smb_export) {
b8e8af38
JK		 1136 fprintf(stderr, "-smb given twice\n");
1137 exit(1);
1138 }
ad196a9d 1139 legacy_smb_export = exported_dir;
b1c99fcd 1140 if (!TAILQ_EMPTY(&slirp_stacks)) {
492efabd
JK		 1141 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1142 vserver_addr);
b8e8af38
JK		 1143 }
1144}
1145
63a01ef8 1146#endif /* !defined(_WIN32) */
b8e8af38 1147
c92ef6a2 1148struct GuestFwd {
8ca9217d 1149 CharDriverState *hd;
c92ef6a2 1150 struct in_addr server;
8ca9217d 1151 int port;
9f8bd042 1152 Slirp *slirp;
511d2b14 1153};
8ca9217d 1154
c92ef6a2 1155static int guestfwd_can_read(void *opaque)
8ca9217d 1156{
c92ef6a2 1157 struct GuestFwd *fwd = opaque;
9f8bd042 1158 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
8ca9217d
AL		 1159}
1160
c92ef6a2 1161static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
8ca9217d 1162{
c92ef6a2 1163 struct GuestFwd *fwd = opaque;
9f8bd042 1164 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
8ca9217d
AL		 1165}
1166
9f8bd042 1167static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
c92ef6a2 1168 int legacy_format)
ad196a9d 1169{
c92ef6a2
JK		 1170 struct in_addr server = { .s_addr = 0 };
1171 struct GuestFwd *fwd;
1172 const char *p;
1173 char buf[128];
1174 char *end;
ad196a9d
JK		 1175 int port;
1176
c92ef6a2
JK		 1177 p = config_str;
1178 if (legacy_format) {
1179 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1180 goto fail_syntax;
1181 }
1182 } else {
1183 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1184 goto fail_syntax;
1185 }
1186 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1187 goto fail_syntax;
1188 }
1189 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1190 goto fail_syntax;
1191 }
1192 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1193 goto fail_syntax;
1194 }
1195 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1196 goto fail_syntax;
1197 }
1198 }
1199 port = strtol(buf, &end, 10);
1200 if (*end != '\0' || port < 1 || port > 65535) {
1201 goto fail_syntax;
ad196a9d 1202 }
ad196a9d 1203
c92ef6a2
JK		 1204 fwd = qemu_malloc(sizeof(struct GuestFwd));
1205 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1206 fwd->hd = qemu_chr_open(buf, p, NULL);
1207 if (!fwd->hd) {
1208 config_error(mon, "could not open guest forwarding device '%s'\n",
1209 buf);
1210 qemu_free(fwd);
ad196a9d
JK		 1211 return;
1212 }
ad196a9d 1213
bb53fc53 1214 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
c92ef6a2
JK		 1215 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1216 "rule '%s'\n", config_str);
1217 qemu_free(fwd);
1218 return;
1219 }
bb53fc53
JK		 1220 fwd->server = server;
1221 fwd->port = port;
1222 fwd->slirp = s->slirp;
1223
c92ef6a2
JK		 1224 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1225 NULL, fwd);
ad196a9d 1226 return;
c92ef6a2
JK		 1227
1228 fail_syntax:
1229 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
ad196a9d
JK		 1230}
1231
6dbe553f
JK		 1232void do_info_usernet(Monitor *mon)
1233{
b1c99fcd 1234 SlirpState *s;
9f8bd042 1235
b1c99fcd
JK		 1236 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1237 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1238 slirp_connection_info(s->slirp, mon);
9f8bd042 1239 }
6dbe553f
JK		 1240}
1241
63a01ef8
AL		 1242#endif /* CONFIG_SLIRP */
1243
1244#if !defined(_WIN32)
1245
1246typedef struct TAPState {
1247 VLANClientState *vc;
1248 int fd;
1249 char down_script[1024];
973cbd37 1250 char down_script_arg[128];
5b01e886 1251 uint8_t buf[4096];
b664e367 1252 unsigned int read_poll : 1;
1f7babf6 1253 unsigned int write_poll : 1;
63a01ef8
AL		 1254} TAPState;
1255
b946a153
AL		 1256static int launch_script(const char *setup_script, const char *ifname, int fd);
1257
b664e367
MM		 1258static int tap_can_send(void *opaque);
1259static void tap_send(void *opaque);
1f7babf6 1260static void tap_writable(void *opaque);
b664e367
MM		 1261
1262static void tap_update_fd_handler(TAPState *s)
1263{
1264 qemu_set_fd_handler2(s->fd,
1265 s->read_poll ? tap_can_send : NULL,
1266 s->read_poll ? tap_send : NULL,
1f7babf6 1267 s->write_poll ? tap_writable : NULL,
b664e367
MM		 1268 s);
1269}
1270
1271static void tap_read_poll(TAPState *s, int enable)
1272{
1273 s->read_poll = !!enable;
1274 tap_update_fd_handler(s);
1275}
1276
1f7babf6
MM		 1277static void tap_write_poll(TAPState *s, int enable)
1278{
1279 s->write_poll = !!enable;
1280 tap_update_fd_handler(s);
1281}
1282
1283static void tap_writable(void *opaque)
1284{
1285 TAPState *s = opaque;
1286
1287 tap_write_poll(s, 0);
1288
1289 qemu_flush_queued_packets(s->vc);
1290}
1291
e3f5ec2b 1292static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
b535b7b2
AL		 1293 int iovcnt)
1294{
e3f5ec2b 1295 TAPState *s = vc->opaque;
b535b7b2
AL		 1296 ssize_t len;
1297
1298 do {
1299 len = writev(s->fd, iov, iovcnt);
1f7babf6
MM		 1300 } while (len == -1 && errno == EINTR);
1301
1302 if (len == -1 && errno == EAGAIN) {
1303 tap_write_poll(s, 1);
1304 return 0;
1305 }
b535b7b2
AL		 1306
1307 return len;
1308}
b535b7b2 1309
4f1c942b 1310static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1311{
e3f5ec2b 1312 TAPState *s = vc->opaque;
4f1c942b
MM		 1313 ssize_t len;
1314
1315 do {
1316 len = write(s->fd, buf, size);
1317 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1318
1319 return len;
63a01ef8
AL		 1320}
1321
3471b757
MM		 1322static int tap_can_send(void *opaque)
1323{
1324 TAPState *s = opaque;
1325
1326 return qemu_can_send_packet(s->vc);
1327}
1328
63a01ef8 1329#ifdef __sun__
5a6d8815
MM		 1330static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1331{
63a01ef8
AL		 1332 struct strbuf sbuf;
1333 int f = 0;
5a6d8815
MM		 1334
1335 sbuf.maxlen = maxlen;
3f4cb3d3 1336 sbuf.buf = (char *)buf;
5a6d8815
MM		 1337
1338 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1339}
63a01ef8 1340#else
5a6d8815
MM		 1341static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1342{
1343 return read(tapfd, buf, maxlen);
1344}
63a01ef8 1345#endif
5a6d8815 1346
783527a9 1347static void tap_send_completed(VLANClientState *vc, ssize_t len)
e19eb224
MM		 1348{
1349 TAPState *s = vc->opaque;
b664e367 1350 tap_read_poll(s, 1);
e19eb224
MM		 1351}
1352
5a6d8815
MM		 1353static void tap_send(void *opaque)
1354{
1355 TAPState *s = opaque;
5a6d8815
MM		 1356 int size;
1357
e19eb224
MM		 1358 do {
1359 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1360 if (size <= 0) {
1361 break;
1362 }
1363
1364 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1365 if (size == 0) {
b664e367 1366 tap_read_poll(s, 0);
e19eb224
MM		 1367 }
1368 } while (size > 0);
63a01ef8
AL		 1369}
1370
0df0ff6d 1371#ifdef TUNSETSNDBUF
fc5b81d1
MM		 1372/* sndbuf should be set to a value lower than the tx queue
1373 * capacity of any destination network interface.
1374 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1375 * a good default, given a 1500 byte MTU.
1376 */
1377#define TAP_DEFAULT_SNDBUF 1024*1024
1378
1379static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1380{
1381 int sndbuf = TAP_DEFAULT_SNDBUF;
1382
1383 if (sndbuf_str) {
1384 sndbuf = atoi(sndbuf_str);
1385 }
1386
1387 if (!sndbuf) {
1388 sndbuf = INT_MAX;
1389 }
1390
d026fb6d 1391 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && sndbuf_str) {
0df0ff6d
MM		 1392 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1393 strerror(errno));
1394 }
fc5b81d1 1395}
0df0ff6d 1396#else
fc5b81d1
MM		 1397static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1398{
1399 if (sndbuf_str) {
1400 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1401 }
0df0ff6d 1402}
fc5b81d1 1403#endif /* TUNSETSNDBUF */
0df0ff6d 1404
b946a153
AL		 1405static void tap_cleanup(VLANClientState *vc)
1406{
1407 TAPState *s = vc->opaque;
1408
b9adce2c
MM		 1409 qemu_purge_queued_packets(vc);
1410
b946a153
AL		 1411 if (s->down_script[0])
1412 launch_script(s->down_script, s->down_script_arg, s->fd);
1413
b664e367 1414 tap_read_poll(s, 0);
1f7babf6 1415 tap_write_poll(s, 0);
b946a153
AL		 1416 close(s->fd);
1417 qemu_free(s);
1418}
1419
63a01ef8
AL		 1420/* fd support */
1421
7a9f6e4a
AL		 1422static TAPState *net_tap_fd_init(VLANState *vlan,
1423 const char *model,
1424 const char *name,
1425 int fd)
63a01ef8
AL		 1426{
1427 TAPState *s;
1428
1429 s = qemu_mallocz(sizeof(TAPState));
63a01ef8 1430 s->fd = fd;
463af534
MM		 1431 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1432 tap_receive_iov, tap_cleanup, s);
b664e367 1433 tap_read_poll(s, 1);
7cb7434b 1434 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
63a01ef8
AL		 1435 return s;
1436}
1437
71e72a19 1438#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
63a01ef8
AL		 1439static int tap_open(char *ifname, int ifname_size)
1440{
1441 int fd;
1442 char *dev;
1443 struct stat s;
1444
1445 TFR(fd = open("/dev/tap", O_RDWR));
1446 if (fd < 0) {
1447 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1448 return -1;
1449 }
1450
1451 fstat(fd, &s);
1452 dev = devname(s.st_rdev, S_IFCHR);
1453 pstrcpy(ifname, ifname_size, dev);
1454
1455 fcntl(fd, F_SETFL, O_NONBLOCK);
1456 return fd;
1457}
1458#elif defined(__sun__)
1459#define TUNNEWPPA (('T'<<16) | 0x0001)
1460/*
1461 * Allocate TAP device, returns opened fd.
1462 * Stores dev name in the first arg(must be large enough).
1463 */
3f4cb3d3 1464static int tap_alloc(char *dev, size_t dev_size)
63a01ef8
AL		 1465{
1466 int tap_fd, if_fd, ppa = -1;
1467 static int ip_fd = 0;
1468 char *ptr;
1469
1470 static int arp_fd = 0;
1471 int ip_muxid, arp_muxid;
1472 struct strioctl strioc_if, strioc_ppa;
1473 int link_type = I_PLINK;;
1474 struct lifreq ifr;
1475 char actual_name[32] = "";
1476
1477 memset(&ifr, 0x0, sizeof(ifr));
1478
1479 if( *dev ){
1480 ptr = dev;
47398b9c 1481 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
63a01ef8
AL		 1482 ppa = atoi(ptr);
1483 }
1484
1485 /* Check if IP device was opened */
1486 if( ip_fd )
1487 close(ip_fd);
1488
1489 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1490 if (ip_fd < 0) {
1491 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1492 return -1;
1493 }
1494
1495 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1496 if (tap_fd < 0) {
1497 syslog(LOG_ERR, "Can't open /dev/tap");
1498 return -1;
1499 }
1500
1501 /* Assign a new PPA and get its unit number. */
1502 strioc_ppa.ic_cmd = TUNNEWPPA;
1503 strioc_ppa.ic_timout = 0;
1504 strioc_ppa.ic_len = sizeof(ppa);
1505 strioc_ppa.ic_dp = (char *)&ppa;
1506 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1507 syslog (LOG_ERR, "Can't assign new interface");
1508
1509 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1510 if (if_fd < 0) {
1511 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1512 return -1;
1513 }
1514 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1515 syslog(LOG_ERR, "Can't push IP module");
1516 return -1;
1517 }
1518
1519 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1520 syslog(LOG_ERR, "Can't get flags\n");
1521
1522 snprintf (actual_name, 32, "tap%d", ppa);
1523 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1524
1525 ifr.lifr_ppa = ppa;
1526 /* Assign ppa according to the unit number returned by tun device */
1527
1528 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1529 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1530 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1531 syslog (LOG_ERR, "Can't get flags\n");
1532 /* Push arp module to if_fd */
1533 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1534 syslog (LOG_ERR, "Can't push ARP module (2)");
1535
1536 /* Push arp module to ip_fd */
1537 if (ioctl (ip_fd, I_POP, NULL) < 0)
1538 syslog (LOG_ERR, "I_POP failed\n");
1539 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1540 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1541 /* Open arp_fd */
1542 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1543 if (arp_fd < 0)
1544 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1545
1546 /* Set ifname to arp */
1547 strioc_if.ic_cmd = SIOCSLIFNAME;
1548 strioc_if.ic_timout = 0;
1549 strioc_if.ic_len = sizeof(ifr);
1550 strioc_if.ic_dp = (char *)&ifr;
1551 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1552 syslog (LOG_ERR, "Can't set ifname to arp\n");
1553 }
1554
1555 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1556 syslog(LOG_ERR, "Can't link TAP device to IP");
1557 return -1;
1558 }
1559
1560 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1561 syslog (LOG_ERR, "Can't link TAP device to ARP");
1562
1563 close (if_fd);
1564
1565 memset(&ifr, 0x0, sizeof(ifr));
1566 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1567 ifr.lifr_ip_muxid = ip_muxid;
1568 ifr.lifr_arp_muxid = arp_muxid;
1569
1570 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1571 {
1572 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1573 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1574 syslog (LOG_ERR, "Can't set multiplexor id");
1575 }
1576
1577 snprintf(dev, dev_size, "tap%d", ppa);
1578 return tap_fd;
1579}
1580
1581static int tap_open(char *ifname, int ifname_size)
1582{
1583 char dev[10]="";
1584 int fd;
1585 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1586 fprintf(stderr, "Cannot allocate TAP device\n");
1587 return -1;
1588 }
1589 pstrcpy(ifname, ifname_size, dev);
1590 fcntl(fd, F_SETFL, O_NONBLOCK);
1591 return fd;
1592}
b29fe3ed 1593#elif defined (_AIX)
1594static int tap_open(char *ifname, int ifname_size)
1595{
1596 fprintf (stderr, "no tap on AIX\n");
1597 return -1;
1598}
63a01ef8
AL		 1599#else
1600static int tap_open(char *ifname, int ifname_size)
1601{
1602 struct ifreq ifr;
1603 int fd, ret;
1604
1605 TFR(fd = open("/dev/net/tun", O_RDWR));
1606 if (fd < 0) {
1607 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1608 return -1;
1609 }
1610 memset(&ifr, 0, sizeof(ifr));
1611 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1612 if (ifname[0] != '\0')
1613 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1614 else
1615 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1616 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1617 if (ret != 0) {
1618 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1619 close(fd);
1620 return -1;
1621 }
1622 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1623 fcntl(fd, F_SETFL, O_NONBLOCK);
1624 return fd;
1625}
1626#endif
1627
1628static int launch_script(const char *setup_script, const char *ifname, int fd)
1629{
7c3370d4 1630 sigset_t oldmask, mask;
63a01ef8
AL		 1631 int pid, status;
1632 char *args[3];
1633 char **parg;
1634
7c3370d4
JK		 1635 sigemptyset(&mask);
1636 sigaddset(&mask, SIGCHLD);
1637 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1638
1639 /* try to launch network script */
1640 pid = fork();
1641 if (pid == 0) {
1642 int open_max = sysconf(_SC_OPEN_MAX), i;
1643
1644 for (i = 0; i < open_max; i++) {
1645 if (i != STDIN_FILENO &&
1646 i != STDOUT_FILENO &&
1647 i != STDERR_FILENO &&
1648 i != fd) {
1649 close(i);
63a01ef8
AL		 1650 }
1651 }
7c3370d4
JK		 1652 parg = args;
1653 *parg++ = (char *)setup_script;
1654 *parg++ = (char *)ifname;
1655 *parg++ = NULL;
1656 execv(setup_script, args);
1657 _exit(1);
1658 } else if (pid > 0) {
1659 while (waitpid(pid, &status, 0) != pid) {
1660 /* loop */
1661 }
1662 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1663
1664 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1665 return 0;
1666 }
1667 }
1668 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1669 return -1;
63a01ef8
AL		 1670}
1671
4a77b25e
MM		 1672static TAPState *net_tap_init(VLANState *vlan, const char *model,
1673 const char *name, const char *ifname1,
1674 const char *setup_script, const char *down_script)
63a01ef8
AL		 1675{
1676 TAPState *s;
1677 int fd;
1678 char ifname[128];
1679
1680 if (ifname1 != NULL)
1681 pstrcpy(ifname, sizeof(ifname), ifname1);
1682 else
1683 ifname[0] = '\0';
1684 TFR(fd = tap_open(ifname, sizeof(ifname)));
1685 if (fd < 0)
4a77b25e 1686 return NULL;
63a01ef8
AL		 1687
1688 if (!setup_script || !strcmp(setup_script, "no"))
1689 setup_script = "";
4a77b25e
MM		 1690 if (setup_script[0] != '\0' &&
1691 launch_script(setup_script, ifname, fd)) {
1692 return NULL;
63a01ef8 1693 }
7a9f6e4a 1694 s = net_tap_fd_init(vlan, model, name, fd);
63a01ef8 1695 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
7cb7434b
AL		 1696 "ifname=%s,script=%s,downscript=%s",
1697 ifname, setup_script, down_script);
973cbd37 1698 if (down_script && strcmp(down_script, "no")) {
63a01ef8 1699 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
973cbd37
AL		 1700 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1701 }
4a77b25e 1702 return s;
63a01ef8
AL		 1703}
1704
1705#endif /* !_WIN32 */
1706
1707#if defined(CONFIG_VDE)
1708typedef struct VDEState {
1709 VLANClientState *vc;
1710 VDECONN *vde;
1711} VDEState;
1712
1713static void vde_to_qemu(void *opaque)
1714{
1715 VDEState *s = opaque;
1716 uint8_t buf[4096];
1717 int size;
1718
cc63bb0f 1719 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
63a01ef8
AL		 1720 if (size > 0) {
1721 qemu_send_packet(s->vc, buf, size);
1722 }
1723}
1724
4f1c942b 1725static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1726{
e3f5ec2b 1727 VDEState *s = vc->opaque;
068daedd 1728 ssize_t ret;
4f1c942b
MM		 1729
1730 do {
1731 ret = vde_send(s->vde, (const char *)buf, size, 0);
1732 } while (ret < 0 && errno == EINTR);
1733
1734 return ret;
63a01ef8
AL		 1735}
1736
b946a153
AL		 1737static void vde_cleanup(VLANClientState *vc)
1738{
1739 VDEState *s = vc->opaque;
1740 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1741 vde_close(s->vde);
1742 qemu_free(s);
1743}
1744
7a9f6e4a
AL		 1745static int net_vde_init(VLANState *vlan, const char *model,
1746 const char *name, const char *sock,
bf38c1a0 1747 int port, const char *group, int mode)
63a01ef8
AL		 1748{
1749 VDEState *s;
1750 char *init_group = strlen(group) ? (char *)group : NULL;
1751 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1752
1753 struct vde_open_args args = {
1754 .port = port,
1755 .group = init_group,
1756 .mode = mode,
1757 };
1758
1759 s = qemu_mallocz(sizeof(VDEState));
cc63bb0f 1760 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
63a01ef8
AL		 1761 if (!s->vde){
1762 free(s);
1763 return -1;
1764 }
e3f5ec2b 1765 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
b946a153 1766 NULL, vde_cleanup, s);
63a01ef8 1767 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
7cb7434b 1768 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
63a01ef8
AL		 1769 sock, vde_datafd(s->vde));
1770 return 0;
1771}
1772#endif
1773
1774/* network connection */
1775typedef struct NetSocketState {
1776 VLANClientState *vc;
1777 int fd;
1778 int state; /* 0 = getting length, 1 = getting data */
abcd2baa
AL		 1779 unsigned int index;
1780 unsigned int packet_len;
63a01ef8
AL		 1781 uint8_t buf[4096];
1782 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1783} NetSocketState;
1784
1785typedef struct NetSocketListenState {
1786 VLANState *vlan;
bf38c1a0 1787 char *model;
7a9f6e4a 1788 char *name;
63a01ef8
AL		 1789 int fd;
1790} NetSocketListenState;
1791
1792/* XXX: we consider we can send the whole packet without blocking */
4f1c942b 1793static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1794{
e3f5ec2b 1795 NetSocketState *s = vc->opaque;
63a01ef8
AL		 1796 uint32_t len;
1797 len = htonl(size);
1798
1799 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
4f1c942b 1800 return send_all(s->fd, buf, size);
63a01ef8
AL		 1801}
1802
4f1c942b 1803static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
63a01ef8 1804{
e3f5ec2b 1805 NetSocketState *s = vc->opaque;
4f1c942b 1806
70503264 1807 return sendto(s->fd, (const void *)buf, size, 0,
4f1c942b 1808 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
63a01ef8
AL		 1809}
1810
1811static void net_socket_send(void *opaque)
1812{
1813 NetSocketState *s = opaque;
abcd2baa
AL		 1814 int size, err;
1815 unsigned l;
63a01ef8
AL		 1816 uint8_t buf1[4096];
1817 const uint8_t *buf;
1818
c5b76b38 1819 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
63a01ef8
AL		 1820 if (size < 0) {
1821 err = socket_error();
1822 if (err != EWOULDBLOCK)
1823 goto eoc;
1824 } else if (size == 0) {
1825 /* end of connection */
1826 eoc:
1827 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1828 closesocket(s->fd);
1829 return;
1830 }
1831 buf = buf1;
1832 while (size > 0) {
1833 /* reassemble a packet from the network */
1834 switch(s->state) {
1835 case 0:
1836 l = 4 - s->index;
1837 if (l > size)
1838 l = size;
1839 memcpy(s->buf + s->index, buf, l);
1840 buf += l;
1841 size -= l;
1842 s->index += l;
1843 if (s->index == 4) {
1844 /* got length */
1845 s->packet_len = ntohl(*(uint32_t *)s->buf);
1846 s->index = 0;
1847 s->state = 1;
1848 }
1849 break;
1850 case 1:
1851 l = s->packet_len - s->index;
1852 if (l > size)
1853 l = size;
abcd2baa
AL		 1854 if (s->index + l <= sizeof(s->buf)) {
1855 memcpy(s->buf + s->index, buf, l);
1856 } else {
1857 fprintf(stderr, "serious error: oversized packet received,"
1858 "connection terminated.\n");
1859 s->state = 0;
1860 goto eoc;
1861 }
1862
63a01ef8
AL		 1863 s->index += l;
1864 buf += l;
1865 size -= l;
1866 if (s->index >= s->packet_len) {
1867 qemu_send_packet(s->vc, s->buf, s->packet_len);
1868 s->index = 0;
1869 s->state = 0;
1870 }
1871 break;
1872 }
1873 }
1874}
1875
1876static void net_socket_send_dgram(void *opaque)
1877{
1878 NetSocketState *s = opaque;
1879 int size;
1880
c5b76b38 1881 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
63a01ef8
AL		 1882 if (size < 0)
1883 return;
1884 if (size == 0) {
1885 /* end of connection */
1886 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1887 return;
1888 }
1889 qemu_send_packet(s->vc, s->buf, size);
1890}
1891
1892static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1893{
1894 struct ip_mreq imr;
1895 int fd;
1896 int val, ret;
1897 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1898 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1899 inet_ntoa(mcastaddr->sin_addr),
1900 (int)ntohl(mcastaddr->sin_addr.s_addr));
1901 return -1;
1902
1903 }
1904 fd = socket(PF_INET, SOCK_DGRAM, 0);
1905 if (fd < 0) {
1906 perror("socket(PF_INET, SOCK_DGRAM)");
1907 return -1;
1908 }
1909
1910 val = 1;
1911 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1912 (const char *)&val, sizeof(val));
1913 if (ret < 0) {
1914 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1915 goto fail;
1916 }
1917
1918 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1919 if (ret < 0) {
1920 perror("bind");
1921 goto fail;
1922 }
1923
1924 /* Add host to multicast group */
1925 imr.imr_multiaddr = mcastaddr->sin_addr;
1926 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1927
1928 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1929 (const char *)&imr, sizeof(struct ip_mreq));
1930 if (ret < 0) {
1931 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1932 goto fail;
1933 }
1934
1935 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1936 val = 1;
1937 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1938 (const char *)&val, sizeof(val));
1939 if (ret < 0) {
1940 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1941 goto fail;
1942 }
1943
1944 socket_set_nonblock(fd);
1945 return fd;
1946fail:
1947 if (fd >= 0)
1948 closesocket(fd);
1949 return -1;
1950}
1951
b946a153
AL		 1952static void net_socket_cleanup(VLANClientState *vc)
1953{
1954 NetSocketState *s = vc->opaque;
1955 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1956 close(s->fd);
1957 qemu_free(s);
1958}
1959
7a9f6e4a
AL		 1960static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1961 const char *model,
1962 const char *name,
bf38c1a0 1963 int fd, int is_connected)
63a01ef8
AL		 1964{
1965 struct sockaddr_in saddr;
1966 int newfd;
1967 socklen_t saddr_len;
1968 NetSocketState *s;
1969
1970 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1971 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1972 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1973 */
1974
1975 if (is_connected) {
1976 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1977 /* must be bound */
1978 if (saddr.sin_addr.s_addr==0) {
1979 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1980 fd);
1981 return NULL;
1982 }
1983 /* clone dgram socket */
1984 newfd = net_socket_mcast_create(&saddr);
1985 if (newfd < 0) {
1986 /* error already reported by net_socket_mcast_create() */
1987 close(fd);
1988 return NULL;
1989 }
1990 /* clone newfd to fd, close newfd */
1991 dup2(newfd, fd);
1992 close(newfd);
1993
1994 } else {
1995 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1996 fd, strerror(errno));
1997 return NULL;
1998 }
1999 }
2000
2001 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8
AL		 2002 s->fd = fd;
2003
463af534 2004 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
b946a153 2005 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2006 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2007
2008 /* mcast: save bound address as dst */
2009 if (is_connected) s->dgram_dst=saddr;
2010
2011 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2012 "socket: fd=%d (%s mcast=%s:%d)",
2013 fd, is_connected? "cloned" : "",
2014 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2015 return s;
2016}
2017
2018static void net_socket_connect(void *opaque)
2019{
2020 NetSocketState *s = opaque;
2021 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2022}
2023
7a9f6e4a
AL		 2024static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2025 const char *model,
2026 const char *name,
bf38c1a0 2027 int fd, int is_connected)
63a01ef8
AL		 2028{
2029 NetSocketState *s;
2030 s = qemu_mallocz(sizeof(NetSocketState));
63a01ef8 2031 s->fd = fd;
463af534 2032 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
b946a153 2033 NULL, net_socket_cleanup, s);
63a01ef8
AL		 2034 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2035 "socket: fd=%d", fd);
2036 if (is_connected) {
2037 net_socket_connect(s);
2038 } else {
2039 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2040 }
2041 return s;
2042}
2043
7a9f6e4a
AL		 2044static NetSocketState *net_socket_fd_init(VLANState *vlan,
2045 const char *model, const char *name,
bf38c1a0 2046 int fd, int is_connected)
63a01ef8
AL		 2047{
2048 int so_type=-1, optlen=sizeof(so_type);
2049
2050 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2051 (socklen_t *)&optlen)< 0) {
2052 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2053 return NULL;
2054 }
2055 switch(so_type) {
2056 case SOCK_DGRAM:
7a9f6e4a 2057 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
63a01ef8 2058 case SOCK_STREAM:
7a9f6e4a 2059 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2060 default:
2061 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2062 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
7a9f6e4a 2063 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
63a01ef8
AL		 2064 }
2065 return NULL;
2066}
2067
2068static void net_socket_accept(void *opaque)
2069{
2070 NetSocketListenState *s = opaque;
2071 NetSocketState *s1;
2072 struct sockaddr_in saddr;
2073 socklen_t len;
2074 int fd;
2075
2076 for(;;) {
2077 len = sizeof(saddr);
2078 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2079 if (fd < 0 && errno != EINTR) {
2080 return;
2081 } else if (fd >= 0) {
2082 break;
2083 }
2084 }
7a9f6e4a 2085 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
63a01ef8
AL		 2086 if (!s1) {
2087 closesocket(fd);
2088 } else {
2089 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2090 "socket: connection from %s:%d",
2091 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2092 }
2093}
2094
7a9f6e4a
AL		 2095static int net_socket_listen_init(VLANState *vlan,
2096 const char *model,
2097 const char *name,
bf38c1a0 2098 const char *host_str)
63a01ef8
AL		 2099{
2100 NetSocketListenState *s;
2101 int fd, val, ret;
2102 struct sockaddr_in saddr;
2103
2104 if (parse_host_port(&saddr, host_str) < 0)
2105 return -1;
2106
2107 s = qemu_mallocz(sizeof(NetSocketListenState));
63a01ef8
AL		 2108
2109 fd = socket(PF_INET, SOCK_STREAM, 0);
2110 if (fd < 0) {
2111 perror("socket");
2112 return -1;
2113 }
2114 socket_set_nonblock(fd);
2115
2116 /* allow fast reuse */
2117 val = 1;
2118 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2119
2120 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2121 if (ret < 0) {
2122 perror("bind");
2123 return -1;
2124 }
2125 ret = listen(fd, 0);
2126 if (ret < 0) {
2127 perror("listen");
2128 return -1;
2129 }
2130 s->vlan = vlan;
bf38c1a0 2131 s->model = strdup(model);
ea053add 2132 s->name = name ? strdup(name) : NULL;
63a01ef8
AL		 2133 s->fd = fd;
2134 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2135 return 0;
2136}
2137
7a9f6e4a
AL		 2138static int net_socket_connect_init(VLANState *vlan,
2139 const char *model,
2140 const char *name,
bf38c1a0 2141 const char *host_str)
63a01ef8
AL		 2142{
2143 NetSocketState *s;
2144 int fd, connected, ret, err;
2145 struct sockaddr_in saddr;
2146
2147 if (parse_host_port(&saddr, host_str) < 0)
2148 return -1;
2149
2150 fd = socket(PF_INET, SOCK_STREAM, 0);
2151 if (fd < 0) {
2152 perror("socket");
2153 return -1;
2154 }
2155 socket_set_nonblock(fd);
2156
2157 connected = 0;
2158 for(;;) {
2159 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2160 if (ret < 0) {
2161 err = socket_error();
2162 if (err == EINTR || err == EWOULDBLOCK) {
2163 } else if (err == EINPROGRESS) {
2164 break;
2165#ifdef _WIN32
2166 } else if (err == WSAEALREADY) {
2167 break;
2168#endif
2169 } else {
2170 perror("connect");
2171 closesocket(fd);
2172 return -1;
2173 }
2174 } else {
2175 connected = 1;
2176 break;
2177 }
2178 }
7a9f6e4a 2179 s = net_socket_fd_init(vlan, model, name, fd, connected);
63a01ef8
AL		 2180 if (!s)
2181 return -1;
2182 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2183 "socket: connect to %s:%d",
2184 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2185 return 0;
2186}
2187
7a9f6e4a
AL		 2188static int net_socket_mcast_init(VLANState *vlan,
2189 const char *model,
2190 const char *name,
bf38c1a0 2191 const char *host_str)
63a01ef8
AL		 2192{
2193 NetSocketState *s;
2194 int fd;
2195 struct sockaddr_in saddr;
2196
2197 if (parse_host_port(&saddr, host_str) < 0)
2198 return -1;
2199
2200
2201 fd = net_socket_mcast_create(&saddr);
2202 if (fd < 0)
2203 return -1;
2204
7a9f6e4a 2205 s = net_socket_fd_init(vlan, model, name, fd, 0);
63a01ef8
AL		 2206 if (!s)
2207 return -1;
2208
2209 s->dgram_dst = saddr;
2210
2211 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2212 "socket: mcast=%s:%d",
2213 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2214 return 0;
2215
2216}
2217
bb9ea79e
AL		 2218typedef struct DumpState {
2219 VLANClientState *pcap_vc;
2220 int fd;
2221 int pcap_caplen;
2222} DumpState;
2223
2224#define PCAP_MAGIC 0xa1b2c3d4
2225
2226struct pcap_file_hdr {
2227 uint32_t magic;
2228 uint16_t version_major;
2229 uint16_t version_minor;
2230 int32_t thiszone;
2231 uint32_t sigfigs;
2232 uint32_t snaplen;
2233 uint32_t linktype;
2234};
2235
2236struct pcap_sf_pkthdr {
2237 struct {
2238 int32_t tv_sec;
2239 int32_t tv_usec;
2240 } ts;
2241 uint32_t caplen;
2242 uint32_t len;
2243};
2244
4f1c942b 2245static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
bb9ea79e 2246{
e3f5ec2b 2247 DumpState *s = vc->opaque;
bb9ea79e
AL		 2248 struct pcap_sf_pkthdr hdr;
2249 int64_t ts;
2250 int caplen;
2251
2252 /* Early return in case of previous error. */
2253 if (s->fd < 0) {
4f1c942b 2254 return size;
bb9ea79e
AL		 2255 }
2256
6ee093c9 2257 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
bb9ea79e
AL		 2258 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2259
37cb6fc3 2260 hdr.ts.tv_sec = ts / 1000000;
bb9ea79e
AL		 2261 hdr.ts.tv_usec = ts % 1000000;
2262 hdr.caplen = caplen;
2263 hdr.len = size;
2264 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2265 write(s->fd, buf, caplen) != caplen) {
2266 qemu_log("-net dump write error - stop dump\n");
2267 close(s->fd);
2268 s->fd = -1;
2269 }
4f1c942b
MM		 2270
2271 return size;
bb9ea79e
AL		 2272}
2273
2274static void net_dump_cleanup(VLANClientState *vc)
2275{
2276 DumpState *s = vc->opaque;
2277
2278 close(s->fd);
2279 qemu_free(s);
2280}
2281
10ae5a7a 2282static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
bb9ea79e
AL		 2283 const char *name, const char *filename, int len)
2284{
2285 struct pcap_file_hdr hdr;
2286 DumpState *s;
2287
2288 s = qemu_malloc(sizeof(DumpState));
2289
024431b3 2290 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
bb9ea79e 2291 if (s->fd < 0) {
10ae5a7a 2292 config_error(mon, "-net dump: can't open %s\n", filename);
bb9ea79e
AL		 2293 return -1;
2294 }
2295
2296 s->pcap_caplen = len;
2297
2298 hdr.magic = PCAP_MAGIC;
2299 hdr.version_major = 2;
2300 hdr.version_minor = 4;
2301 hdr.thiszone = 0;
2302 hdr.sigfigs = 0;
2303 hdr.snaplen = s->pcap_caplen;
2304 hdr.linktype = 1;
2305
2306 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
10ae5a7a 2307 config_error(mon, "-net dump write error: %s\n", strerror(errno));
bb9ea79e
AL		 2308 close(s->fd);
2309 qemu_free(s);
2310 return -1;
2311 }
2312
463af534 2313 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
bb9ea79e
AL		 2314 net_dump_cleanup, s);
2315 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2316 "dump to %s (len=%d)", filename, len);
2317 return 0;
2318}
2319
63a01ef8 2320/* find or alloc a new VLAN */
1a609520 2321VLANState *qemu_find_vlan(int id, int allocate)
63a01ef8
AL		 2322{
2323 VLANState **pvlan, *vlan;
2324 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2325 if (vlan->id == id)
2326 return vlan;
2327 }
1a609520
JK		 2328 if (!allocate) {
2329 return NULL;
2330 }
63a01ef8 2331 vlan = qemu_mallocz(sizeof(VLANState));
63a01ef8 2332 vlan->id = id;
9da43187 2333 TAILQ_INIT(&vlan->send_queue);
63a01ef8
AL		 2334 vlan->next = NULL;
2335 pvlan = &first_vlan;
2336 while (*pvlan != NULL)
2337 pvlan = &(*pvlan)->next;
2338 *pvlan = vlan;
2339 return vlan;
2340}
2341
7697079b
AL		 2342static int nic_get_free_idx(void)
2343{
2344 int index;
2345
2346 for (index = 0; index < MAX_NICS; index++)
2347 if (!nd_table[index].used)
2348 return index;
2349 return -1;
2350}
2351
d07f22c5
AL		 2352void qemu_check_nic_model(NICInfo *nd, const char *model)
2353{
2354 const char *models[2];
2355
2356 models[0] = model;
2357 models[1] = NULL;
2358
2359 qemu_check_nic_model_list(nd, models, model);
2360}
2361
2362void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2363 const char *default_model)
2364{
2365 int i, exit_status = 0;
2366
2367 if (!nd->model)
2368 nd->model = strdup(default_model);
2369
2370 if (strcmp(nd->model, "?") != 0) {
2371 for (i = 0 ; models[i]; i++)
2372 if (strcmp(nd->model, models[i]) == 0)
2373 return;
2374
2375 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2376 exit_status = 1;
2377 }
2378
2379 fprintf(stderr, "qemu: Supported NIC models: ");
2380 for (i = 0 ; models[i]; i++)
2381 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2382
2383 exit(exit_status);
2384}
2385
c1d6eed7
MM		 2386static int net_handle_fd_param(Monitor *mon, const char *param)
2387{
2388 if (!qemu_isdigit(param[0])) {
2389 int fd;
2390
2391 fd = monitor_get_fd(mon, param);
2392 if (fd == -1) {
2393 config_error(mon, "No file descriptor named %s found", param);
2394 return -1;
2395 }
2396
2397 return fd;
2398 } else {
2399 return strtol(param, NULL, 0);
2400 }
2401}
2402
10ae5a7a 2403int net_client_init(Monitor *mon, const char *device, const char *p)
63a01ef8
AL		 2404{
2405 char buf[1024];
2406 int vlan_id, ret;
2407 VLANState *vlan;
7a9f6e4a 2408 char *name = NULL;
63a01ef8
AL		 2409
2410 vlan_id = 0;
2411 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2412 vlan_id = strtol(buf, NULL, 0);
2413 }
1a609520 2414 vlan = qemu_find_vlan(vlan_id, 1);
9036de1a 2415
7a9f6e4a 2416 if (get_param_value(buf, sizeof(buf), "name", p)) {
10ae5a7a 2417 name = qemu_strdup(buf);
7a9f6e4a 2418 }
63a01ef8 2419 if (!strcmp(device, "nic")) {
8e4416af 2420 static const char * const nic_params[] = {
eb54b6dc 2421 "vlan", "name", "macaddr", "model", "addr", "id", "vectors", NULL
8e4416af 2422 };
63a01ef8
AL		 2423 NICInfo *nd;
2424 uint8_t *macaddr;
7697079b 2425 int idx = nic_get_free_idx();
63a01ef8 2426
0aa7a205 2427 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
10ae5a7a
JK		 2428 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2429 ret = -1;
2430 goto out;
8e4416af 2431 }
7697079b 2432 if (idx == -1 || nb_nics >= MAX_NICS) {
10ae5a7a 2433 config_error(mon, "Too Many NICs\n");
771f1339
AL		 2434 ret = -1;
2435 goto out;
63a01ef8 2436 }
7697079b 2437 nd = &nd_table[idx];
63a01ef8
AL		 2438 macaddr = nd->macaddr;
2439 macaddr[0] = 0x52;
2440 macaddr[1] = 0x54;
2441 macaddr[2] = 0x00;
2442 macaddr[3] = 0x12;
2443 macaddr[4] = 0x34;
7697079b 2444 macaddr[5] = 0x56 + idx;
63a01ef8
AL		 2445
2446 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2447 if (parse_macaddr(macaddr, buf) < 0) {
10ae5a7a 2448 config_error(mon, "invalid syntax for ethernet address\n");
771f1339
AL		 2449 ret = -1;
2450 goto out;
63a01ef8
AL		 2451 }
2452 }
2453 if (get_param_value(buf, sizeof(buf), "model", p)) {
2454 nd->model = strdup(buf);
2455 }
5607c388
MA		 2456 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2457 nd->devaddr = strdup(buf);
2458 }
eb54b6dc
GH		 2459 if (get_param_value(buf, sizeof(buf), "id", p)) {
2460 nd->id = strdup(buf);
2461 }
ffe6370c
MT		 2462 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2463 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2464 char *endptr;
2465 long vectors = strtol(buf, &endptr, 0);
2466 if (*endptr) {
2467 config_error(mon, "invalid syntax for # of vectors\n");
2468 ret = -1;
2469 goto out;
2470 }
2471 if (vectors < 0 || vectors > 0x7ffffff) {
2472 config_error(mon, "invalid # of vectors\n");
2473 ret = -1;
2474 goto out;
2475 }
2476 nd->nvectors = vectors;
2477 }
63a01ef8 2478 nd->vlan = vlan;
7a9f6e4a 2479 nd->name = name;
7697079b 2480 nd->used = 1;
7a9f6e4a 2481 name = NULL;
63a01ef8
AL		 2482 nb_nics++;
2483 vlan->nb_guest_devs++;
4d73cd3b 2484 ret = idx;
63a01ef8
AL		 2485 } else
2486 if (!strcmp(device, "none")) {
8e4416af 2487 if (*p != '\0') {
10ae5a7a
JK		 2488 config_error(mon, "'none' takes no parameters\n");
2489 ret = -1;
2490 goto out;
8e4416af 2491 }
63a01ef8
AL		 2492 /* does nothing. It is needed to signal that no network cards
2493 are wanted */
2494 ret = 0;
2495 } else
2496#ifdef CONFIG_SLIRP
2497 if (!strcmp(device, "user")) {
8e4416af 2498 static const char * const slirp_params[] = {
c92ef6a2
JK		 2499 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2500 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2501 "hostfwd", "guestfwd", NULL
8e4416af 2502 };
ad196a9d 2503 struct slirp_config_str *config;
c92ef6a2
JK		 2504 int restricted = 0;
2505 char *vnet = NULL;
2506 char *vhost = NULL;
2507 char *vhostname = NULL;
ad196a9d
JK		 2508 char *tftp_export = NULL;
2509 char *bootfile = NULL;
c92ef6a2
JK		 2510 char *vdhcp_start = NULL;
2511 char *vnamesrv = NULL;
ad196a9d 2512 char *smb_export = NULL;
c92ef6a2 2513 char *vsmbsrv = NULL;
ad196a9d 2514 const char *q;
b8e8af38 2515
0aa7a205 2516 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
10ae5a7a
JK		 2517 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2518 ret = -1;
2519 goto out;
8e4416af 2520 }
c92ef6a2 2521 if (get_param_value(buf, sizeof(buf), "ip", p)) {
3da6abd4 2522 int vnet_buflen = strlen(buf) + strlen("/24") + 1;
c92ef6a2 2523 /* emulate legacy parameter */
3da6abd4
BS		 2524 vnet = qemu_malloc(vnet_buflen);
2525 pstrcpy(vnet, vnet_buflen, buf);
2526 pstrcat(vnet, vnet_buflen, "/24");
c92ef6a2
JK		 2527 }
2528 if (get_param_value(buf, sizeof(buf), "net", p)) {
2529 vnet = qemu_strdup(buf);
2530 }
2531 if (get_param_value(buf, sizeof(buf), "host", p)) {
2532 vhost = qemu_strdup(buf);
2533 }
63a01ef8 2534 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
c92ef6a2 2535 vhostname = qemu_strdup(buf);
63a01ef8 2536 }
49ec9b40 2537 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
b8e8af38 2538 restricted = (buf[0] == 'y') ? 1 : 0;
49ec9b40 2539 }
c92ef6a2
JK		 2540 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2541 vdhcp_start = qemu_strdup(buf);
2542 }
2543 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2544 vnamesrv = qemu_strdup(buf);
49ec9b40 2545 }
ad196a9d
JK		 2546 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2547 tftp_export = qemu_strdup(buf);
2548 }
2549 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2550 bootfile = qemu_strdup(buf);
2551 }
2552 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2553 smb_export = qemu_strdup(buf);
c92ef6a2
JK		 2554 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2555 vsmbsrv = qemu_strdup(buf);
2556 }
ad196a9d
JK		 2557 }
2558 q = p;
2559 while (1) {
2560 config = qemu_malloc(sizeof(*config));
2561 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2562 "hostfwd", &q)) {
ad196a9d
JK		 2563 break;
2564 }
c92ef6a2 2565 config->flags = SLIRP_CFG_HOSTFWD;
ad196a9d
JK		 2566 config->next = slirp_configs;
2567 slirp_configs = config;
2568 config = NULL;
2569 }
2570 q = p;
2571 while (1) {
2572 config = qemu_malloc(sizeof(*config));
2573 if (!get_next_param_value(config->str, sizeof(config->str),
c92ef6a2 2574 "guestfwd", &q)) {
ad196a9d
JK		 2575 break;
2576 }
2577 config->flags = 0;
2578 config->next = slirp_configs;
2579 slirp_configs = config;
2580 config = NULL;
2581 }
2582 qemu_free(config);
63a01ef8 2583 vlan->nb_host_devs++;
c92ef6a2
JK		 2584 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2585 vhostname, tftp_export, bootfile, vdhcp_start,
2586 vnamesrv, smb_export, vsmbsrv);
2587 qemu_free(vnet);
2588 qemu_free(vhost);
2589 qemu_free(vhostname);
ad196a9d
JK		 2590 qemu_free(tftp_export);
2591 qemu_free(bootfile);
c92ef6a2
JK		 2592 qemu_free(vdhcp_start);
2593 qemu_free(vnamesrv);
ad196a9d 2594 qemu_free(smb_export);
c92ef6a2 2595 qemu_free(vsmbsrv);
8ca9217d 2596 } else if (!strcmp(device, "channel")) {
b1c99fcd 2597 if (TAILQ_EMPTY(&slirp_stacks)) {
ad196a9d
JK		 2598 struct slirp_config_str *config;
2599
2600 config = qemu_malloc(sizeof(*config));
2601 pstrcpy(config->str, sizeof(config->str), p);
c92ef6a2 2602 config->flags = SLIRP_CFG_LEGACY;
ad196a9d
JK		 2603 config->next = slirp_configs;
2604 slirp_configs = config;
2605 } else {
b1c99fcd 2606 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
8ca9217d 2607 }
8ca9217d 2608 ret = 0;
63a01ef8
AL		 2609 } else
2610#endif
2611#ifdef _WIN32
2612 if (!strcmp(device, "tap")) {
8e4416af
AL		 2613 static const char * const tap_params[] = {
2614 "vlan", "name", "ifname", NULL
2615 };
63a01ef8 2616 char ifname[64];
8e4416af 2617
0aa7a205 2618 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
10ae5a7a
JK		 2619 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2620 ret = -1;
2621 goto out;
8e4416af 2622 }
63a01ef8 2623 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
10ae5a7a 2624 config_error(mon, "tap: no interface name\n");
771f1339
AL		 2625 ret = -1;
2626 goto out;
63a01ef8
AL		 2627 }
2628 vlan->nb_host_devs++;
7a9f6e4a 2629 ret = tap_win32_init(vlan, device, name, ifname);
63a01ef8 2630 } else
b29fe3ed 2631#elif defined (_AIX)
63a01ef8
AL		 2632#else
2633 if (!strcmp(device, "tap")) {
0aa7a205 2634 char ifname[64], chkbuf[64];
63a01ef8 2635 char setup_script[1024], down_script[1024];
4a77b25e 2636 TAPState *s;
63a01ef8
AL		 2637 int fd;
2638 vlan->nb_host_devs++;
2639 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2640 static const char * const fd_params[] = {
2641 "vlan", "name", "fd", "sndbuf", NULL
2642 };
c1d6eed7 2643 ret = -1;
0aa7a205 2644 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a 2645 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
10ae5a7a 2646 goto out;
8e4416af 2647 }
c1d6eed7
MM		 2648 fd = net_handle_fd_param(mon, buf);
2649 if (fd == -1) {
2650 goto out;
2651 }
63a01ef8 2652 fcntl(fd, F_SETFL, O_NONBLOCK);
4a77b25e 2653 s = net_tap_fd_init(vlan, device, name, fd);
c1d6eed7
MM		 2654 if (!s) {
2655 close(fd);
2656 }
63a01ef8 2657 } else {
8e4416af 2658 static const char * const tap_params[] = {
0df0ff6d 2659 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
8e4416af 2660 };
0aa7a205 2661 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
10ae5a7a
JK		 2662 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2663 ret = -1;
2664 goto out;
8e4416af 2665 }
63a01ef8
AL		 2666 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2667 ifname[0] = '\0';
2668 }
2669 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2670 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2671 }
2672 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2673 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2674 }
4a77b25e
MM		 2675 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2676 }
2677 if (s != NULL) {
fc5b81d1 2678 const char *sndbuf_str = NULL;
0df0ff6d 2679 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
fc5b81d1 2680 sndbuf_str = buf;
0df0ff6d 2681 }
fc5b81d1 2682 tap_set_sndbuf(s, sndbuf_str, mon);
4a77b25e
MM		 2683 ret = 0;
2684 } else {
2685 ret = -1;
63a01ef8
AL		 2686 }
2687 } else
2688#endif
2689 if (!strcmp(device, "socket")) {
0aa7a205 2690 char chkbuf[64];
63a01ef8 2691 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
0df0ff6d
MM		 2692 static const char * const fd_params[] = {
2693 "vlan", "name", "fd", NULL
2694 };
63a01ef8 2695 int fd;
c1d6eed7 2696 ret = -1;
0aa7a205 2697 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
10ae5a7a 2698 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
10ae5a7a 2699 goto out;
8e4416af 2700 }
c1d6eed7
MM		 2701 fd = net_handle_fd_param(mon, buf);
2702 if (fd == -1) {
2703 goto out;
2704 }
2705 if (!net_socket_fd_init(vlan, device, name, fd, 1)) {
2706 close(fd);
2707 goto out;
2708 }
2709 ret = 0;
63a01ef8 2710 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
8e4416af
AL		 2711 static const char * const listen_params[] = {
2712 "vlan", "name", "listen", NULL
2713 };
0aa7a205 2714 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
10ae5a7a
JK		 2715 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2716 ret = -1;
2717 goto out;
8e4416af 2718 }
7a9f6e4a 2719 ret = net_socket_listen_init(vlan, device, name, buf);
63a01ef8 2720 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
8e4416af
AL		 2721 static const char * const connect_params[] = {
2722 "vlan", "name", "connect", NULL
2723 };
0aa7a205 2724 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
10ae5a7a
JK		 2725 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2726 ret = -1;
2727 goto out;
8e4416af 2728 }
7a9f6e4a 2729 ret = net_socket_connect_init(vlan, device, name, buf);
63a01ef8 2730 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
8e4416af
AL		 2731 static const char * const mcast_params[] = {
2732 "vlan", "name", "mcast", NULL
2733 };
0aa7a205 2734 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
10ae5a7a
JK		 2735 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2736 ret = -1;
2737 goto out;
8e4416af 2738 }
7a9f6e4a 2739 ret = net_socket_mcast_init(vlan, device, name, buf);
63a01ef8 2740 } else {
10ae5a7a 2741 config_error(mon, "Unknown socket options: %s\n", p);
771f1339
AL		 2742 ret = -1;
2743 goto out;
63a01ef8
AL		 2744 }
2745 vlan->nb_host_devs++;
2746 } else
2747#ifdef CONFIG_VDE
2748 if (!strcmp(device, "vde")) {
8e4416af
AL		 2749 static const char * const vde_params[] = {
2750 "vlan", "name", "sock", "port", "group", "mode", NULL
2751 };
63a01ef8
AL		 2752 char vde_sock[1024], vde_group[512];
2753 int vde_port, vde_mode;
8e4416af 2754
0aa7a205 2755 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
10ae5a7a
JK		 2756 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2757 ret = -1;
2758 goto out;
8e4416af 2759 }
63a01ef8
AL		 2760 vlan->nb_host_devs++;
2761 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2762 vde_sock[0] = '\0';
2763 }
2764 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2765 vde_port = strtol(buf, NULL, 10);
2766 } else {
2767 vde_port = 0;
2768 }
2769 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2770 vde_group[0] = '\0';
2771 }
2772 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2773 vde_mode = strtol(buf, NULL, 8);
2774 } else {
2775 vde_mode = 0700;
2776 }
7a9f6e4a 2777 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
63a01ef8
AL		 2778 } else
2779#endif
bb9ea79e
AL		 2780 if (!strcmp(device, "dump")) {
2781 int len = 65536;
2782
2783 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2784 len = strtol(buf, NULL, 0);
2785 }
2786 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2787 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2788 }
10ae5a7a 2789 ret = net_dump_init(mon, vlan, device, name, buf, len);
bb9ea79e 2790 } else {
10ae5a7a 2791 config_error(mon, "Unknown network device: %s\n", device);
771f1339
AL		 2792 ret = -1;
2793 goto out;
63a01ef8
AL		 2794 }
2795 if (ret < 0) {
10ae5a7a 2796 config_error(mon, "Could not initialize device '%s'\n", device);
63a01ef8 2797 }
771f1339 2798out:
10ae5a7a 2799 qemu_free(name);
63a01ef8
AL		 2800 return ret;
2801}
2802
8b13c4a7
AL		 2803void net_client_uninit(NICInfo *nd)
2804{
2805 nd->vlan->nb_guest_devs--;
2806 nb_nics--;
2807 nd->used = 0;
2808 free((void *)nd->model);
2809}
2810
6f338c34
AL		 2811static int net_host_check_device(const char *device)
2812{
2813 int i;
bb9ea79e 2814 const char *valid_param_list[] = { "tap", "socket", "dump"
6f338c34
AL		 2815#ifdef CONFIG_SLIRP
2816 ,"user"
2817#endif
2818#ifdef CONFIG_VDE
2819 ,"vde"
2820#endif
2821 };
2822 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2823 if (!strncmp(valid_param_list[i], device,
2824 strlen(valid_param_list[i])))
2825 return 1;
2826 }
2827
2828 return 0;
2829}
2830
f18c16de 2831void net_host_device_add(Monitor *mon, const QDict *qdict)
6f338c34 2832{
f18c16de
LC		 2833 const char *device = qdict_get_str(qdict, "device");
2834 const char *opts = qdict_get_try_str(qdict, "opts");
2835
6f338c34 2836 if (!net_host_check_device(device)) {
376253ec 2837 monitor_printf(mon, "invalid host network device %s\n", device);
6f338c34
AL		 2838 return;
2839 }
10ae5a7a 2840 if (net_client_init(mon, device, opts ? opts : "") < 0) {
5c8be678
AL		 2841 monitor_printf(mon, "adding host network device %s failed\n", device);
2842 }
6f338c34
AL		 2843}
2844
f18c16de 2845void net_host_device_remove(Monitor *mon, const QDict *qdict)
6f338c34 2846{
6f338c34 2847 VLANClientState *vc;
f18c16de
LC		 2848 int vlan_id = qdict_get_int(qdict, "vlan_id");
2849 const char *device = qdict_get_str(qdict, "device");
6f338c34 2850
1a609520 2851 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
6f338c34 2852 if (!vc) {
6f338c34
AL		 2853 return;
2854 }
e8f1f9db
AL		 2855 if (!net_host_check_device(vc->model)) {
2856 monitor_printf(mon, "invalid host network device %s\n", device);
2857 return;
2858 }
6f338c34
AL		 2859 qemu_del_vlan_client(vc);
2860}
2861
63a01ef8
AL		 2862int net_client_parse(const char *str)
2863{
2864 const char *p;
2865 char *q;
2866 char device[64];
2867
2868 p = str;
2869 q = device;
2870 while (*p != '\0' && *p != ',') {
2871 if ((q - device) < sizeof(device) - 1)
2872 *q++ = *p;
2873 p++;
2874 }
2875 *q = '\0';
2876 if (*p == ',')
2877 p++;
2878
10ae5a7a 2879 return net_client_init(NULL, device, p);
63a01ef8
AL		 2880}
2881
406c8df3
GC		 2882void net_set_boot_mask(int net_boot_mask)
2883{
2884 int i;
2885
2886 /* Only the first four NICs may be bootable */
2887 net_boot_mask = net_boot_mask & 0xF;
2888
2889 for (i = 0; i < nb_nics; i++) {
2890 if (net_boot_mask & (1 << i)) {
2891 nd_table[i].bootable = 1;
2892 net_boot_mask &= ~(1 << i);
2893 }
2894 }
2895
2896 if (net_boot_mask) {
2897 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2898 exit(1);
2899 }
2900}
2901
376253ec 2902void do_info_network(Monitor *mon)
63a01ef8
AL		 2903{
2904 VLANState *vlan;
2905 VLANClientState *vc;
2906
2907 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
376253ec 2908 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
63a01ef8 2909 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
376253ec 2910 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
63a01ef8
AL		 2911 }
2912}
2913
f18c16de 2914void do_set_link(Monitor *mon, const QDict *qdict)
436e5e53
AL		 2915{
2916 VLANState *vlan;
2917 VLANClientState *vc = NULL;
f18c16de
LC		 2918 const char *name = qdict_get_str(qdict, "name");
2919 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
436e5e53
AL		 2920
2921 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2922 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2923 if (strcmp(vc->name, name) == 0)
dd5de373
EI		 2924 goto done;
2925done:
436e5e53
AL		 2926
2927 if (!vc) {
7dc3fa09 2928 monitor_printf(mon, "could not find network device '%s'\n", name);
c3cf0d3f 2929 return;
436e5e53
AL		 2930 }
2931
2932 if (strcmp(up_or_down, "up") == 0)
2933 vc->link_down = 0;
2934 else if (strcmp(up_or_down, "down") == 0)
2935 vc->link_down = 1;
2936 else
376253ec
AL		 2937 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2938 "valid\n", up_or_down);
436e5e53 2939
34b25ca7
AL		 2940 if (vc->link_status_changed)
2941 vc->link_status_changed(vc);
436e5e53
AL		 2942}
2943
63a01ef8
AL		 2944void net_cleanup(void)
2945{
2946 VLANState *vlan;
2947
63a01ef8
AL		 2948 /* close network clients */
2949 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
b946a153 2950 VLANClientState *vc = vlan->first_client;
63a01ef8 2951
b946a153
AL		 2952 while (vc) {
2953 VLANClientState *next = vc->next;
63a01ef8 2954
b946a153
AL		 2955 qemu_del_vlan_client(vc);
2956
2957 vc = next;
63a01ef8
AL		 2958 }
2959 }
63a01ef8
AL		 2960}
2961
2962void net_client_check(void)
2963{
2964 VLANState *vlan;
2965
2966 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2967 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2968 continue;
2969 if (vlan->nb_guest_devs == 0)
2970 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2971 if (vlan->nb_host_devs == 0)
2972 fprintf(stderr,
2973 "Warning: vlan %d is not connected to host network\n",
2974 vlan->id);
2975 }
2976}
Qemu copy for testing